Lock



April 16, 1935. c. LEDIN E1 AL LOCK Filed March 6, 1951 5 Sheets-Sheet 1 6, olaa; 4M 11v VENTOR ATTORNEY April 16, 1935. c. LEDIN ET AL LOCK Filed March 6, 1931 3 Sheets-Sheet 2 71v VENTORJ v A TTORNE V April 16,1935. c. LEDIN ET.A 1,998,246

LOCK

Filed March a, 1951 s Sheets-Shet 5 I N B Y ATTORNEY Patented Apr. 16, i 1935 UNITED, STATES PATENT OFFICE screams; (oil-veggie? This invention relates to rim locks of the type in which the bolt mechanism is utilized to interlockthe strike and the main casing of the lock. 3

In a commercial lock of this'type, it is customary to use a pair of bolts moving in asubstantially vertical direction and having actuating means for holding those bolts in a lower'locking position or an upper unlocking position, and 'ior deadlocking the bolts in'those particular posi-' tions. It is the object of our invention to devise a mechanism by which we will accomplish all the various results necessary in a lock of this type in every cheap and economical manner, in order that such a lock may be a commercially desirable article. Whereas, in the prior art; there are numerous locks of thisiparticular type, and'patents covering the same, very few of these locks havev ever become-commercially successful due to their poor internal constructionordue, to'the'v factthat the particular mechanism designed was expensive in its construction. I v More particularly, it is the object of our inven tion to devise an interlocking bolt mechanism in which a pair of bolts are secured to a main bolt body which is pivotedat arelatively distant point from the overhanging portion of the casing. The pair of bolts will thus partake of a rocking motion with the main bolt body about this pivot, this rocking'motion of the main bolt body being translated into a substantially vertical movement of the pair of bolts, due to the relatively distant pivot point of said main bolt body. 1

. It is a further object of our invention to devise a simple inexpensive deadlocking mechanismin the form of a slide which is reciprocated for moving the rocking bolt body into its two extreme positions, and for deadlocking the same'in those positions in a very simple. manner.

It is a further object of our invention to devise a rollback bearing aparticular relation to the lock'operating mechanism, so that the normal positioning of the rollback will automatically deadlock the bolts and the lock operating mech-' anism. It is still a further object ofthe invention to devise an inside rollback which cooperates with a rollback operating spring and a cup-like member for maintaining the cup like member in an operative position relatively to'the outside rollback.

A further object of the invention is the design of a bolt mechanism which may be fabricated very cheaply. v

It is a further object of our invention to so design the casing that it may be made of an in egral die casting, with certain bearing. portions inserted subsequent to the main die casting of the casing; in orderto iacilitate'the casting of the main casing." It'is'still a' further object of the invention to devisea casingcover which acts not only to-maintain the bearing of the casing in its inserted position, 'but cooperates with a stud on k the main body'of the casing, for at the same time position.

maintaining the I rocking bolt in an operative As may be seenirom the above rather long list of improvements resulting from our invention,

this particular disclosure is the result of much study of this particular type of lock,'and its conception is extremely valuable, as has been proven by the commercial success of this particular lock;

"Therefore, while the particular modification will be described below in detail, it should be under-'- stood that relatively broad modifications of the particular described structure will be apparent to one skilled in the and we do not wishto be limited to the details of this disclosure except as defined by the claims appended hereto.

, Fora more-particular description of our invention, we shall now refer to the drawings, wherein Fig. '1 is a fulliront View of our lock and Fig. 2 is a side view thereof; "Fig. 3 is a viewshowing the oack of thelock, while Figs. 4 and 5 are respectively front and side views of the strike with which the lock cooperates. Fig. 6 is a view of the lock with the back cover removed. Fig. 7 is a sectional'view showing the bolts in their locking position as demonstrated in Fig. 6. Fig. 8 is a sectional view of Fig. 6 showing the parts in their operative positions. Fig. 9. is a viewsimilar to thatof Fig. 6 and shows the bolts in an unlocking position. Fig. '10 is a top and sectional view or the bolt body and the pair of interlocking bolts.

Fig. 11 shows twoviews of the bearing insert for theslideoi the lock. Fig. 12 is a front and side view of the locking operating slide. Fig. 13 is a frontand sectional view of 'the'ins'ide rollback.

l4 shows'the spring which actuates the rollback. Fig. 15 is an elevationofa cup-like memberutilize'd on the rollback for operating therollback slide and for cooperation with the outside rollback pin. Fig. 16 is a top view of Fig; 15 whereas Fig.1? is a bottom view of Fig. 15. Figs. 18 andlQ illustrate the'assembly of thecup-like member of Fig. 15, with the rollback of Fig. 13 and the spring'of Fig. 14. v j p I Referring now. more particularly to the draw.-

ings, and especially Figs. 1' to, 5 inclusive, it will be noted that our lock embodies a oasing NJ having a rollback-operating knob ll, aseries of screws A2 for securing the casing to a door, and

an overhanging portion l3. A pair of bolt heads ii are, mounted in thisoverhanging portion and cooperate withears l5'on a strike 16, in a manner which is well understood in the art. A rear casing cover Til is secured by a screw is which is threaded into astud 28 in the casing which will be described later. This rear casing cover H also carries a rollback mechanism 19 which cooperates with the usual tongue on the standard cylinder (not shown) for operating the lock bolt as is understood by those skilled in the art.

The casing I0 is formed of die cast material, and in order to facilitate withdrawal of the rather complicated cores necessary to form the over-.- hanging casing portion, we have arranged for the integral casting with the casing of bearing supporting portions 20 at opposite points on the casing. In these bearing supporting portions, we mount the bearing 2! shown in Fig. 11, which is a die cast piece having the bearings lugs 22 which are adapted to guide the slide 23 of Fig. 12 in its bolt operating action.

The bolt heads l4, already described, are integral with a main bolt body portion 24 more particularly illustrated in Fig. 10. As will be noted, this bolt-body portion 24 is formed of a plate material which may be steel, brass, etc., and the cylindrical bolt portions l4. are formed integrally with said main body portion by the curling'or bending of the extensions, 24a as is quite obvious. In the usual practice, it is advisable to fill in the hollow portions formed in the cylindrical bolts I 4, with lugs or other solid metal so as to present a solid body. The bolt body 24 is formed with integral lugs 25 which act to guide the bolt by 00-" bolt, as will be apparent later. The bolt 24 is also pierced at 21' for cooperation with a fixed stud 28 on the main body of the casing and is held in operative relation to the stud and to the lock casing by. the screw l8, which, at the same time, holds the rear cover ll in position as has been described above. 1 I

As has been quite apparent already,,the reciprocating movement of the operating slide 23 is adapted, through the coaction oi the pin 21 with the slot 26 in the bolt body 24, to rock that bolt body about its pivot on the stud 28 and into the locking position of Fig. 6 or the unlocking position illustrated in Fig. 9. We shall now attempt to describe the means ior operating the slide 23, and for deadlocking the same at its extreme reciprocated positions; and for controlling this slide from the outside of the lock, or from the inside as may be the case. n c 7 The inside thumb turn H is mounted in the casing It for rotary movement and has fixed thereon the rollback 29 shown more particularly in Fig. 13. This rollback carries a pin 30 which is grooved at 3! for a purpose to be described presently. Mounted on this pin 3!] is a cup like member, illustrated more particularly in Figs. 15 to 19 inclusive. This cup-like member has a cylindrical portion 33 flattened at two sides '33 which is adapted to operate in the slot 34 of the slide 23 for reciprocating the same as will be quite readily understood.

The member 32 is cut out or slotted at 34, so that the spring 35, detailed in Fig. 14, will rest in said cut-out portion and bear against the groove 3! of the stud 3!]. It is quite apparent that the spring 35 will function to maintain the rollback and its member 32, at the end of the slot 34 of the lock operating slide 23, and will also function through the cut-out portion 34 and the groove 3|, to maintain the cup-like member 32 on the pin 30. This cup like member is also equipped with a relatively larger cylindrical portion 36 which is cut away at36 for the admission of the pin 31 carried by the rollback 38 of the outside operating device I9, which has already been described. It is readily understood that by this arrangement, the inside-rollback pin 30 or the outside rollback pin 3! will each be able to operate the slide 23 by means of the member 32.

The relation of the rollback 29 to pin 30, and the cup-member 33, is such relatively to the slide 23, that when the spring 35 presses said rollback into its final position at the end. of the slot 34, as shown more particularly in Figs. 6 and 9, the rollback pin 33 will be indead center relation relatively to the reciprocating movement of the slide 23 and will act to maintain the same deadlocked in either the position of Fig. 6 or the position of Fig. 9 so as to maintain the body bolt 24 in either of its two extreme positions.

' It. is thought that the above description clearly indicates the oper ation of a particular embodiment of'our invention, the scope of the invention being indicated in the claims inserted below.

We claim:

1. In a lock, a casing having an overhanging strike interlocking portion, a pair of bolt heads in said portion secured to a common body portion for movement into interlocking relation with the strike, said body portion being pivoted at the other extremeend of said casing, a slide in said casing, a rollback for operating said slide, and cooperating cam means on said slide and bolt body adapted to impart a pivotal movement to said body, said movement being translated into a substantially vertical movement of said pair of bolt heads.

2. In a look, a casing having an overhanging strike interlocking portion, a pair of bolt heads in said portion secured to a common body portion for movement into interlocking relation with the strike, said body portion being pivoted at a point relatively far removed from said overhanging portion, a slide in said casing, a rollback cam for operating said slide and for deadlocking the same in its extreme throw positions, and operating means between said cam and bolt body for moving the body on its pivot, and for deadlocking the same at its extreme throw positions with the pair of bolt heads in looking or unlocking position.

3. In a lock, an operating mechanism, a rollback adapted to" operate said mechanism, said rollback having mounted thereon a cup-like member, a spring for pressing said rollback into a designated position, and cooperating portions of said rollback and cup-like member contacting with said spring whereby the spring maintains said member on said rollback while urging the rollback into its designated position.

4. In a lock, an operating mechanism, a rollback adapted to operate said mechanism, a pin on said rollback, a cup-like member mounted on said pin, a spring for pressing said rollback into a designated position, a slot in said cup-like member, said spring being adapted to bear on said rollback pin through said slot whereby to main-' CHARLES LEDIN.

KARL A. BRAUNING. 

